Car-truck.



G. G. TOWLE.

GAR TRUCK.

APPLICATION FILED snr'r. s, 1912.

1,074,479. Patented Sept. 30, 1913.

2 SKEETS-SHEET 1.

G. c. TOWLE. OAR TRUCK.

APPLICATION FILED SEPT. 3, 1912,

Patented Sept. 30, 1913.

2 SHEETS-SHEET 2.

COLUMBIA PLANouIMEn 66.. VnrsnM-ON. D. cv

@FFTCE.

GEORGE C. TOWLE, O15 DAYTON, OHIO.

CAR-TRUCK.

To all whom it may concern Be it known that I, GEORGE C. Towns, citizenof the United States, residing at Dayton, in the county of Montgomeryand State of Ohio, have invented certain new and useful Improvements inCar-Trucks; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in nonparallelaxle car trucks.

The object of the invention is to provide a truck of this type in whichthe wheels are .enabled to easily adjust themselves to the variouscurvatures of a track, thereby mamtending to move the wheels and axle toa normal position. 7

To the above ends, the truck is simple in construction and efficient inoperation, as will hereinafter more fully appear from the followingdescription.

Referring to the accompanying drawings, Figure 1 is a top plan view ofone end of the truck, it being understood that both ends are identical;Fig. 2 is a side elevation of the same; Fig. 3 is a section on the line22 of Fig. 1; Fig. 4 is a sect-ion on the line bb of Fig. 1; and Fig. 5is a section on the line c-c of Fig. 1.

In the specification and drawings, similar reference characters indicatecorresponding parts.

Referring more particularly to the drawings, 11 represent the wheels ofa truck, the same being mounted on axles 2. The ends of the axles havebearings in journal boxes 3 which are mounted in guides 4 extending fromsub-frames 5. Mounted between the journal boxes 3 and the subframes 5are the usual springs 15 which are instrumental in absorbing shocks whenthe truck is passing over any unevenness in thetrack. Pivotally attachedat their upper Specification of Letters Patent.

Application filed September 8, 1912.

Patented Sept. 3%, 1.913.

Serial No. 718,241.

ends to each of the sub-frames 5 are three sets of links6 which are alsopivotally at tached at their lower ends to cross members 7 and 8. Thecross members 7 and 8 are attached to side longitudinal members 9thereby forming the main frame of the truck. Extending in a well knownmanner above the side members 9, are rails 10 upon which the car body ismounted, and springs 11 (only one of which is shown) are mounted betweenthe main frame and the rails. Mounted on the side members 9 are crossframes 12 which receive pivots 13. The pivots 13 are secured to spiderslet attached to and forming a part of the sub-frames 5. Said pivots 13,it will be observed, are mounted along the longitudinal axis of the carand directly above and in vertical alinement with the axles, therebypermitting the sub-frames to be easily moved when the car is rounding acurve. The axes of the pivots of the links 6 are radial to the pivots 13thus permitting the sub-frames and the wheels to swing on said pivots.The car body and themain frame of the truck are suspended from thesub-frames 5 by the links 6, and as there are three sets of these linksfor each frame 5, a three point suspension is provided which preventsthe car body rocking laterally relative to the sub frames. When the caris running on a straight stretch of track, the axles stand at rightangles to the track, and when the wheels enter a curve, the contactbetween the wheels and track will move theaxles to positionsapproximately radial with the curvature of the track. The truck may,therefore, be made of considerable length and still negotiate curves ofcomparatively small radii. The links 6, normally lie in true ver ticalpositions, and when the wheels strike a curve, said links are thrown atan angle, and the upper pivots'will describe arcs of circles, therebyshortening the distance between the main frame and the sub-frames. Thismovement of the links 6 will lift the car body and main frame of thetruck owing to the main frame and car body being suspended by the links6 from the sub-frames 5. The weight of the car and truck will,therefore, exert a tendency to move the axles back to their normalpositions, and will maintain said axles in said positions when the caris running on a straight stretch of track. Owing to the pivots 13 beingmounted directly above the axles 2, the said pivots will prevent lateralmovement between the subframes 5 and the main frame. The car, therefore,will not be subject to lateral or swaying movements.

While in the drawings, I have shown the links in duplicate, I do notwish to limit myself to this exact construction, because said links maybe provided singly; neither do I wish to limit myself to otherunessential details of construction shown and described, as the devicemay be varied considerably without departing from the spirit of theinvention, or the scope of the claims.

Having described my invention, I claim,

1. In a car truck, a main frame, a subfr ame including wheels and anaxle, pivotally attached to said main frame, said main and sub-framesbeing vertically movable relative to each other, links connecting saidmain and sub-frame, whereby, when the sub-frame is swung on the pivot,the weight of the main frame will exert an influence t0 move saidsub-frame to a normal position.

2. In a car truck, a main frame, a sub frame including the wheels andaxle, pivotally attached to said main frame, said pivot being invertical alinement with the axle of the truck, said main and sub-framenecting said main and subframes, whereby,

when the sub-frame is swung on the pivot,

the weight of the main frame will exert an influence tending to movesaid sub-frame to a normal position.

3. In a car truck, a main frame, a crossframe mounted on said mainframe, a subframe, a spider attached to said sub-frame, said cross-frameand said spider being pivotally connected, said main frame and saidsub-frame being vertically movable relative to each other; said pivotbeing in vertical alinement with the axle of the truck, and linksconstituting a three point suspension connecting said main frame andsub-frame, whereby, when the sub-frame is swung on the pivot, the weightof the main frame will exert an influence tending to move said subframeto a normal position. 7

In testimony whereof I ailixmy signature, in presence of two witnesses.

GEORGE o. TowLE.

WVitnesses I i R. J. MGCARTY, MATTHEW SmBLER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Batents;

Washington, D. C.

